Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G01C 17/10

Comparing observed direction with north indication

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes > Magnetic compasses > with north-seeking magnetic elements, e.g. needles > Comparing observed direction with north indication

CPC:

Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes (using gyroscopic effect G01C19/00) > Magnetic compasses > with north-seeking magnetic elements, e.g. needles > Comparing observed direction with north indication

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

Navigate with arrow keys, Enter to open

  • G01C 17/12 by sighting means, e.g. for surveyors' compasses IPC+CPC Available in IPC and CPC
  • G01C 17/14 by reference marks, e.g. for ships' compasses IPC+CPC Available in IPC and CPC
  • G01C 17/16 by clinometers, e.g. for determining dip or strike of geological strata IPC+CPC Available in IPC and CPC